package com.ggb.filter;

/**
 * Created with IntelliJ IDEA.
 *
 * @User: GGB
 * @Date: 2021/12/3
 * @Description
 */
import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

import com.ggb.entry.User;
import org.springframework.stereotype.Component;

@Component
@WebFilter(urlPatterns = {"/index.html", "/account/redirect/index", "/order.html", "/account/redirect/order"}, filterName = "userFilter")
public class UserFilter implements Filter {

    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        HttpServletResponse response = (HttpServletResponse) servletResponse;
        HttpSession session = request.getSession();
        User user = (User) session.getAttribute("user");
        if (user == null) {
            response.sendRedirect("login.html");
        } else {
            filterChain.doFilter(servletRequest, servletResponse);
        }
    }

    @Override
    public void destroy() {

    }
}
